13887477 has 16 divisors (see below), whose sum is σ = 20825280. Its totient is φ = 9145296.

The previous prime is 13887463. The next prime is 13887481. The reversal of 13887477 is 77478831.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13887477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (1301580).

Almost surely, 2^13887477 is an apocalyptic number.

It is an amenable number.

13887477 is a deficient number, since it is larger than the sum of its proper divisors (6937803).

13887477 is an equidigital number, since it uses as much as digits as its factorization.

13887477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6289 (or 6283 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 13887477 is about 3726.5905329134. The cubic root of 13887477 is about 240.3667829240.

The spelling of 13887477 in words is "thirteen million, eight hundred eighty-seven thousand, four hundred seventy-seven".